Software Engineer II – Integrations & API Connectivity
Core
Building and operating scalable API integrations with financial institutions across Europe within Mastercard's Open Finance Europe team.
Role type
Software Engineer II (backend services & API connectivity)
Builds
Scalable backend services and API integrations for financial institutions
Domain
Fintech / Open Banking / Payments
Deliverable
production ML models | product features
Required skills
C#, .NET, Web APIs, cloud platforms (Azure, AWS), distributed systems, SDLC, testing practices, secure coding
Preferred skills
payments/banking/Open Banking (PSD2), microservices architectures, monitoring/observability, AI-assisted development tools
Technologies
C#, .NET, Web APIs, Azure, AWS, PostgreSQL, Flyway, Java, Spring Boot, GitHub Copilot
Responsibilities
Develop, test, and support scalable APIs and backend services; Contribute to design and implementation of reliable software solutions; Troubleshoot and resolve application and production issues; Implement and maintain unit, integration, and end-to-end tests; Collaborate with cross-functional teams including Product, Architecture, Security, and SRE
Seniority
Mid-level, hands-on IC